This is a UV reactive tattoo that I got in 2009 by the amazing Richie in canon city Colorado. I wanted to get the dark mark tattoo as soon as I read the books but I didn't want a huge tattoo on my arm, the solution...uv ink. The tattoo cannot be seen without a black light, it looks like there's nothing there! If you want a tattoo I can't recommend Richie enough! Check him out at thedungeoninc.com.